Crankcase breathers play a big role in reducing diesel engine emissions by recirculating blow-by gases back into the engine.

The full term we're discussing here is the Positive Crankcase Ventilation valve. This is a small component found between the ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

Heres what you need to know. The PCV (positive crankcase ventilation) valve is a one-way valve that recycles crankcase gases back into the engine to burn. A plugged PCV valve can result in a rough ...

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